Lubricator



J. POWELL. LUBRIOATOR.

- (No Model.)

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JAMES POWELL, OF CINCINNATI, OHIO.

LUBRlC'AT-Q R.

SPECIFICATION forming partof Letters Patent No. 365,629, dated June 28, 1887.

Application filed May 18, 1896. Serial No. 202,575.

' To aZZ whom it may concern:

monly known as sightfeedlubrieators, and

the first part of my improvements comprises a novel combination of appliances for securing the sight-feed tube between the bottom of the oil-reservoir and the base upon which the latter is mounted. The aforesaid combination includes a windowed bushing, an annular flange, a cylindrical chamber, a sight-feed tube, and a set of counterbores, 'which appliances are arranged and adapted to operate as hereinafter more fully described.

The second part of my improvements comprises a novel combination of devices for centralizing and packing the end of the index or gage glass of a lubricator. This combination includes a screw-threaded socket, a pair of packingrings or gaskets, a nut, and an adj u'stable plug, which latter is provided with a nipple, an axial bore, and one or more side ports or openings that communicate with the interior of said socket, as hereinafter more fully described. l In the annexed drawings, Figure 1 is a front elevation of my improvedlubricator. Fig. 2 is an enlargedhorizontal section of the same, said section being taken at the line 5 5 of Fig. 4. Fig. 3 is an enlarged axial section of the index-glass and its connections. Fig. 4 is a similar section of the sight-chamber and its accessories.

The fount or reservoir A hasa filling-cap,

B, and a pair of integral lateral branches, 0 O, terminating with sockets c c, that hold the in- "dex or gage glass D, the lower socket, c, be-

ing furnished with a drain-cock, E. Furthermore, the upper end of socket c is counterbored at F, therebyaffording a nipple, G, of

, slightly less diameter than the bore of the index-tube D. Fitted within this counterbore, and supporting said tube,is an annular gasket, H, of any suitable yielding or compressible material, such as vulcanized rubber, fiber,

(No model.)

8m. Theuppcrextremityof tube Dfits loosely within the other socket, c, thelatter being chambered out at 0 to afford a free passage for the oil. This socket has an internal thread, 0', that receives the screw z of an adjustable plug, I, said plugbeing provided with transverse ports land a longitudinal channel, It, thelatter being carried through a nipple, K, that is either integral with said plug or is fastened thereto. Furthermore, the side of the plug is concaved where the lateral ports are located, so as to afford ample space for the passage of oil.

L is a compressible packing or gasket surrounding the nipple K, and resting on the upper end of the glass tube D.

An external thread, m of the socket c, at

Depending from the bottom of the reservoir is the drop-feed nipple O, and at a suitable distance from this nipple said reservoir is eounterbored at P, to receive the upper end of the glass cylinder or sight-chamber Q.

R is a raised annular seat contiguous to the annular counterbore P, which seat serves as a bearing for the upper packing, S, to abut against.

a is a cylindrical chamberjn the reservoir, within which chamber is fitted a bushing, T, that surrounds the glass cylinder Q, said bushing having openings or windows 15 t on opposite sides thereof, to render the drop-feed visible. I

S is the packing at the bottom of the bushing, the opposite ends of the latter being suitably beveled to crowd both paekings S S against the exterior of glass cylinder Q. The lower end of said cylinder is seated in an annular counterbore, U, formed between the discharge-tube V and an annular flange, w, projecting upwardly from the detachable base W, and entering the chamber a of the reservoir. This baseis provided with screws or bolts X X, that engage with lugs Y Y of the fount, and said base may be furnished with a valve and hand-wheel, as indicated bythe dotted lines in Fig. l.

Z is the valve that controls the delivery of oil at the nipple O.

a is the condensing'tube of the reservoir.

Reference to Fig. 3 shows that the oil at the top of thelubricator passes through the lateral branch 0 before entering the chamber 0 of the upper socket, c, which chamber affords ample space for the lubricant to have access to the ports J of the adjustable plug I. Consequently the oil flows freely through these ports into the channel k of nipple K, and thus enters the index-glass D, the packing L preventing any leakage at the top of said glass. It is also apparent that as this nipple enters the tube it prevents the packing spreading in the latter, while said packing serves as a cushion that sccures the glass against breakage, no matter how tightly the plug I may be screwed down. This security against breakage of the glass is still further guarded against by causing the lower end of the tube to rest upon a similar cushion, H. If it should at any time be necessary to compress these packings L II to compensate either for shrinkage or wear of the same, it is apparent this act may be acconr plished by simply inserting a screw-driver or other convenient tool in the nick i, and then screwing down the plug I without disturbing or interfering with any part of the lubricator. Furthermore, this method of packing the index-tube affords a more extended observation surface between the branches 0 C than can possibly be obtained when the tube is packed by external nuts or stuffing-boxes joints. It is also evident that this method of packing said joints prevents the gaskets S S crowding in between the opposite ends of the cylinder Q and its seats R U, while the insertion of the annnlarflangew within the socket a of reservoir A retains the base W against such lateral shifting as might tend to break said cylinder, or throw the discharge-tube V out of line with the drop-feed nipple O.

I claim as my invention 1. A sight-feed lubricator consisting of the reservoir A, having at bottom a dischargenipple, O,annular eounterbores P It, and chamber a, in combination with a detachable base, \V, provided with an annular conntcrbore, U, discharge-channel V, annular flange 10, and suitable retaining devices, as X X, a transparent tube, Q, being confined within said eounterbores I U, and a bushing, T, having one or more openings,t, bci ng clamped between said counterbore R and the upper end of said annular flange 10, substantially as herein described.

2. A lubricator-reservoir provided with a branch, 0, terminating with asocket, a, screwthreaded internally at c, to engage with the thread i of an adjustable plug, I, having one or more lateral ports, J, an axial bore, 7:, and a nipple, K, said nipple being surrounded by the annular packing L, in combination with the packing N and nut M, which nut is coupled to said socket c, as and for the purpose herein described.

In testimony whereof I affix my signature in presence of two witnesses.

J AMES POWELL.

XVitnesses:

J AMES H. LAYMAN, SAML. S. CARPENTER. 

